Get intersections with BoundingBoxIntersectWith

Civil3D
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1

Hi, I’m trying to find the intersections my labels might have with another object. And for that I’m using the BoundingBoxIntersectWith() method, but I’m getting the following error: eInvalidExtents and I don’t understand what’s wrong and how to solve it.

Entity.BoundingBoxIntersectWith(Entity, Autodesk.AutoCAD.DatabaseServices.Intersect, Point3dCollection, IntPtr, IntPtr) Method

Here is my python script:

# Load the Python Standard and DesignScript Libraries
import sys #sys is a fundamental Python library - here, we're using it to load in the standard IronPython libraries
import clr #This is .NET's Common Language Runtime. It's an execution environment that is able to execute code from several different languages.

# Add Assemblies for AutoCAD and Civil3D
clr.AddReference('AcMgd')
clr.AddReference('AcCoreMgd')
clr.AddReference('AcDbMgd')
clr.AddReference('AecBaseMgd')
clr.AddReference('AecPropDataMgd')
clr.AddReference('AeccDbMgd')
clr.AddReference('ProtoGeometry') #A Dynamo library for its proxy geometry
#classes. You'll only need this if you're interacting with geometry
clr.AddReference('AeccPressurePipesMgd')
clr.AddReference('acdbmgdbrep')
clr.AddReference('Civil3DNodes')
clr.AddReference('AutoCADNodes')

import Autodesk #Loads the Autodesk namespace
# Import references from AutoCAD
AAR = Autodesk.AutoCAD.Runtime
AAA = Autodesk.AutoCAD.ApplicationServices #Setting a handle to the currently-open instance of the AutoCAD application
AAD = Autodesk.AutoCAD.DatabaseServices
AAE = Autodesk.AutoCAD.EditorInput
AAG = Autodesk.AutoCAD.Geometry
AADy = Autodesk.AutoCAD.DynamoNodes

AUX = Autodesk.Aec.DatabaseServices

OP = AAD.OpenMode
TS = AAD.Transaction

# Import references from Civil3D
ACA = Autodesk.Civil.ApplicationServices #Setting a handle to the currently-open instance of the Civil3D application
ACD = Autodesk.Civil.DatabaseServices
ACDy = Autodesk.Civil.DynamoNodes

AD = ACA.CivilApplication.ActiveDocument #Finally, setting up handles to the active Civil3D document
AC = Autodesk.Civil

adoc = AAA.Application.DocumentManager.MdiActiveDocument
editor = adoc.Editor

#Inputs:
#IN[0] -> List of List of Civil Object

with adoc.LockDocument():
    with adoc.Database as db:

        with db.TransactionManager.StartTransaction() as t:
            # E vem ai:
          
            Ratio = 0.5
            Labels = []
            for i in range(0,len(IN[0])):
                for j in range(0,len(IN[0][i])):
                    Point = IN[0][i][j].InternalDBObject.Position
                    PT = AAG.Point3d(Point.X+6, Point.Y-5, Point.Z)
                    Labels.append(ACD.StructureLabel.Create(IN[0][i][j].InternalDBObject.Id,IN[1],PT))
                                       
            LabelsEx = TS.GetObject(t,Labels[0],OP.ForRead) 
            
            PColle = AAG.Point3dCollection()
            OBO = AAD.Intersect.OnBothOperands
            LabelsEx.BoundingBoxIntersectWith(IN[0][0][0].InternalDBObject,OBO,PColle,0,0)
            
            t.Commit()
            
# Assign your output to the OUT variable.
OUT = LabelsEx
1 Like
2

Hi @andre.demski,

I believe that BoundingBoxIntersectWith works on Autodesk.AutoCAD.DatabaseServices.DBObject and will not work with Civil Entities.
As a workaround, you may use Explode to get the block from the label and use it for your intersection check.

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2 Likes
3

Oh, it makes a lot of sense, but I need the labels to remain labels so I can move them.

My idea is to make a routine which I create the labels, check if they have intersections with some other object and if so, I move them away from the interference.

So the idea I had after your answer is:

Create the label, explode, check the interferences and if there are interferences I delete the block, create the label again and so on…

4

Note that the labels will stay intact, the exploded objects will be in acDBObjColl. Try the above simple sample and you will get what I mean…

1 Like